Commitments and Contingencies - Legal Proceedings (Details) - USD ($) $ in Millions		12 Months Ended
	Feb. 05, 2016	Dec. 31, 2015
Sandoz Paragraph IV Certification Letter
Legal Proceedings
Period of time in during which a patent infringement suit can be filed in federal district court after receipt of the Paragraph IV certification	45 days
Minimum period of time before the FDA will grant approval of the application if a patent infringement suit is filed	30 months
European Patent Organization Appeal
Legal Proceedings
Patent revocation, impact on revenue		$ 0.0
Ferumoxytol | European Patent Organization Appeal
Legal Proceedings
Term of data protection entitled to under EU regulations		8 years
Term of market exclusivity entitled to under EU regulations		10 years